Math, asked by Rushil2405, 1 year ago

An integer is chosen at random between 1 and 100. Find the probability that it is divisible by 8. Please give the correct answer as per the board answer key as there is a lot of confusion with the total number of outcomes being 100 or 98.

Answers

Answered by EmadAhamed

↑ Here is your answer ↓
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Integers between 1 and 100,

So, the total number of outcomes will be 98

Numbers divisible by 8,

$8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96$

There are 12 numbers,

So (1),

$= 12/98$

$= 6/49$

And (2),

$98 - 12 = 86$

$86/98 =$

$43/49$

I did the same mistake too in board exams ^.^
By taking the total number as 100,

I hope the Board give us marks on that

Rushil2405: But I think it should be 100

Rushil2405: Just Google ' what is between in maths'

EmadAhamed: This is the solution everywhere:/ including meritnation

Rushil2405: I still believe it's 100. I asked every single English teacher and she said that 1 and 100 should be included grammatically.

EmadAhamed: imagine there is a dog between you and me

If someone asks what is there between you and me, we can't say you, me and the dog. we can only say just dog.

KarupsK: if " from 1 to 100 " in the question then you can include both 1 and 100

Rushil2405: Ok. So if you remember in around 7th and 8th grade we used to play a game. It's like we used to ask to choose a number between 1 and 10 then subtract, multiply etc etc. And I always used to choose 10 and get the same answer.

Rushil2405: Just Google meaning of between in maths

Answered by KarupsK

Let A be the event of choosing a number which is divisible by 8

P(A) = 12 /98

= 6/ 49

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